US Bridges

County RD P over Willow Creek

Fair

Glenn County, California · 0.4 MI S of S.H. 162 · Structure no. 11C0048

Built
1940
85 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
2 main spans
Daily traffic
249
2011 count
Owner
County
County Highway Agency

About this bridge

County RD P over Willow Creek is a steel stringer/multi-beam or girder carrying County RD P over Willow Creek in Glenn County, California. It was built in 1940, so it is 85 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 249 vehicles a day, roughly 20% of them trucks, projected to reach 375 by 2043. The structure is 81 ft (24.7 m) long and 22 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCounty RD P
CrossesWillow Creek
Location0.4 MI S of S.H. 162
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.51654, -122.13677
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating25.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length81 ft (24.7 m)
Longest span39 ft (11.9 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic249 (2011)
Projected traffic375 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD P over Willow Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is County RD P over Willow Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does County RD P over Willow Creek carry?

About 249 vehicles per day (2011 count), of which roughly 20% are trucks.

How long is County RD P over Willow Creek?

The structure is 81 ft (24.7 m) long with a longest span of 39 ft (11.9 m) and a deck 22 ft wide.

Who owns County RD P over Willow Creek?

It is owned by the County Highway Agency.